from playstore reports ( b115c1cd99b167600158665a5b0dff4c90a21b55 ) java.lang.NullPointerException: at org.mozilla.gecko.gfx.JavaPanZoomController.onDown (JavaPanZoomController.java:933) at android.view.GestureDetector.onTouchEvent (GestureDetector.java:605) at org.mozilla.gecko.gfx.TouchEventHandler.dispatchEvent (TouchEventHandler.java:222) at org.mozilla.gecko.gfx.TouchEventHandler.handleEvent (TouchEventHandler.java:175) at org.mozilla.gecko.gfx.JavaPanZoomController.onTouchEvent (JavaPanZoomController.java:162) at org.mozilla.gecko.gfx.LayerView.onTouchEvent (LayerView.java:164) at android.view.View.dispatchTouchEvent (View.java:10779) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2858) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2534) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at android.view.ViewGroup.dispatchTransformedTouchEvent (ViewGroup.java:2864) at android.view.ViewGroup.dispatchTouchEvent (ViewGroup.java:2491) at com.android.internal.policy.DecorView.superDispatchTouchEvent (DecorView.java:605) at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent (PhoneWindow.java:1895) at android.app.Activity.dispatchTouchEvent (Activity.java:3241) at android.support.v7.view.WindowCallbackWrapper.dispatchTouchEvent (WindowCallbackWrapper.java:71) at com.android.internal.policy.DecorView.dispatchTouchEvent (DecorView.java:567) at android.view.View.dispatchPointerEvent (View.java:11008) at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent (ViewRootImpl.java:5155) at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess (ViewRootImpl.java:5007) at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4532) at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:4585) at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4551) at android.view.ViewRootImpl$AsyncInputStage.forward (ViewRootImpl.java:4684) at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4559) at android.view.ViewRootImpl$AsyncInputStage.apply (ViewRootImpl.java:4741) at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4532) at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:4585) at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:4551) at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:4559) at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:4532) at android.view.ViewRootImpl.deliverInputEvent (ViewRootImpl.java:7092) at android.view.ViewRootImpl.doProcessInputEvents (ViewRootImpl.java:7024) at android.view.ViewRootImpl.enqueueInputEvent (ViewRootImpl.java:6985) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent (ViewRootImpl.java:7202) at android.view.InputEventReceiver.dispatchInputEvent (InputEventReceiver.java:185) at android.os.MessageQueue.nativePollOnce (Native Method) at android.os.MessageQueue.next (MessageQueue.java:323) at android.os.Looper.loop (Looper.java:136) at android.app.ActivityThread.main (ActivityThread.java:6776) at java.lang.reflect.Method.invoke (Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1518) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1408)
fixed https://gerrit.libreoffice.org/gitweb?p=core.git;a=commitdiff;h=723487f415d8d0474f1de7d9f01eab2aa3db947e